Fig.1.

Four-Stage Approach of Study Disease Classification. ^aPatients falling outside of these ranges were classified as MCI or MILD based on their current clinician-reported diagnosis. If patients were missing a diagnosis they were excluded from the analyses. FAQ, Functional Activities Questionnaire; MCI, mild cognitive impairment; MILD, mild dementia; MMSE, Mini-Mental State Examination; [+], amyloid positive; [–], amyloid negative.